Porous alumina thin films on conductive substrates for templated 1-dimensional nanostructuring

► Method for high-yield/low-cost nanostructure synthesis. ► Porous AAO thin films by anodization of Al on Ti/Au/Si and Ti/Pt/Si substrates. ► Barrier layer removal by selective chemical etching and electrochemical reversed bias. ► Ti adhesion layer influence on barrier morphology. ► Pt nanowire array deposition with high methanol oxidation activity.